A beta ray.
英
美
- β射线
相关词汇
a must
a
a radio announcer's plummy voice.
a very quiet self-effacing person
A profound melancholy seized her.
a non-renewable contract/lease
a problem of alarming dimensions.
A variety of non-standard chassis
a harmonious combination of colours
a cigarette/cigar/pipe smoker
a teaching approach with objectives
a counterattack on one's detractors
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